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//
// Copyright (c) 2015-2024 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
package madmin
import "errors"
//go:generate msgp -file $GOFILE
// ServicePrincipalAuth holds fields for a successful SP authentication with Azure
type ServicePrincipalAuth struct {
TenantID string `json:",omitempty"`
ClientID string `json:",omitempty"`
ClientSecret string `json:",omitempty"`
}
// TierAzure represents the remote tier configuration for Azure Blob Storage.
type TierAzure struct {
Endpoint string `json:",omitempty"`
AccountName string `json:",omitempty"`
AccountKey string `json:",omitempty"`
Bucket string `json:",omitempty"`
Prefix string `json:",omitempty"`
Region string `json:",omitempty"`
StorageClass string `json:",omitempty"`
SPAuth ServicePrincipalAuth `json:",omitempty"`
}
// IsSPEnabled returns true if all SP related fields are provided
func (ti TierAzure) IsSPEnabled() bool {
return ti.SPAuth.TenantID != "" && ti.SPAuth.ClientID != "" && ti.SPAuth.ClientSecret != ""
}
// AzureOptions supports NewTierAzure to take variadic options
type AzureOptions func(*TierAzure) error
// AzureServicePrincipal helper to supply optional service principal credentials
func AzureServicePrincipal(tenantID, clientID, clientSecret string) func(az *TierAzure) error {
return func(az *TierAzure) error {
if tenantID == "" {
return errors.New("empty tenant ID unsupported")
}
if clientID == "" {
return errors.New("empty client ID unsupported")
}
if clientSecret == "" {
return errors.New("empty client secret unsupported")
}
az.SPAuth.TenantID = tenantID
az.SPAuth.ClientID = clientID
az.SPAuth.ClientSecret = clientSecret
return nil
}
}
// AzurePrefix helper to supply optional object prefix to NewTierAzure
func AzurePrefix(prefix string) func(az *TierAzure) error {
return func(az *TierAzure) error {
az.Prefix = prefix
return nil
}
}
// AzureEndpoint helper to supply optional endpoint to NewTierAzure
func AzureEndpoint(endpoint string) func(az *TierAzure) error {
return func(az *TierAzure) error {
az.Endpoint = endpoint
return nil
}
}
// AzureRegion helper to supply optional region to NewTierAzure
func AzureRegion(region string) func(az *TierAzure) error {
return func(az *TierAzure) error {
az.Region = region
return nil
}
}
// AzureStorageClass helper to supply optional storage class to NewTierAzure
func AzureStorageClass(sc string) func(az *TierAzure) error {
return func(az *TierAzure) error {
az.StorageClass = sc
return nil
}
}
// NewTierAzure returns a TierConfig of Azure type. Returns error if the given
// parameters are invalid like name is empty etc.
func NewTierAzure(name, accountName, accountKey, bucket string, options ...AzureOptions) (*TierConfig, error) {
if name == "" {
return nil, ErrTierNameEmpty
}
az := &TierAzure{
AccountName: accountName,
AccountKey: accountKey,
Bucket: bucket,
// Defaults
Endpoint: "",
Prefix: "",
Region: "",
StorageClass: "",
}
for _, option := range options {
err := option(az)
if err != nil {
return nil, err
}
}
return &TierConfig{
Version: TierConfigVer,
Type: Azure,
Name: name,
Azure: az,
}, nil
}
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